B. Fixing Drive AssemblyIf a jam occurs in the fixing/delivery assembly, the DC controller PCB generates thefixing drive stop signal to turn off the fixing drive stop solenoid (SL3) so as to turn on thefixing brake clutch (CL19), thereby immediately stopping the fixing roller.The cleaning belt used to clean the upper fixing roller is taken up by the cleaning belttake-up arm moving up and down in response to the activation of the fixing cleaning beltsolenoid (SL14).The area where the fixing roller comes into contact with the cleaning belt guide ismade rather large so as to prevent offset.The height of the fixing assembly inlet guide is varied by turning on and off the fixingassembly inlet guide drive solenoid (SL16) so as to facilitate feeding of copy paper.The height is varied according to the following conditions, and the change is madewith reference to a height of about 130 mm (at start of copying and upon end of rotation):• High if the copy paper is B5R or longer (including B5R).• Low if the copy paper is shorter than the above.However, if 'free size' is selected for the multifeeder, the control will be as follows:• High at the start of copying.When the first copy paper moves past the registration paper sensor (PS23), its lengthis measured and the above control is executed.CHAPTER 6 FIXING SYSTEM6-3COPYRIGHT © 1997 CANON INC. CANON NP6560/NP6360/NP6260 REV. 0 NOV. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
